Rural Water - Quarter 1, 2009 - (Page 34) HYDRAULIC MODELS Helping You Make Better Decisions BY SHARAVAN GOVINDAN, TOM WALSKI AND JACK COOK, BENTLEY SYSTEMS, INC. Why hydraulic models? Water utility managers, engineers and operators are regularly required to make decisions regarding the design and operation of their distribution systems. Some questions that frequently face decision makers: • How big should this new pipe be? • Which pump should we buy? • Where should we put the new tank? Decision-makers need to provide justifiable answers to these hydraulic questions on how to manage the utility’s distribution assets. Water distribution networks are highlyconnected, complex systems. You change a pump at station A and pressures change many miles away. While intuition and experience are helpful, you also need quantitative and detailed information. Network models can help you answer more detailed questions: • What exactly will pressure be during a peak hour if I use a 6-inch pipe instead of an 8-inch pipe? • When the new subdivision comes online, what will happen to pressures Figure 1: Elevation contours and pressure/elevation profiles in a water network Figure 2: Finding critical pipes and valves to prioritize rehabilitation investment 34 • First Quarter 2009 Table of Contents for the Digital Edition of Rural Water - Quarter 1, 2009 Rural Water - Quarter 1, 2009 Contents From the President Question & Answer: Water Conservation in the Home Avoiding the Humpty Dumpty Approach to Data Backup From the CEO What the Future Holds Asset Management for Small Communities Understanding Your Surface Water Source: The Rivers Hydraulic Models Expeditionary Water Packaging System Graces Delta The Rural Water Rally in April Training in Hawaii Regulatory Update Rural Water Releases Report on Water Infrastructure Projects and Economic Stimulus Legislation Throwing My Loop Advertisers.com Index to Advertisers Rural Water - Quarter 1, 2009 http://www.nxtbook.com/nxtbooks/naylor/NRWQ0412 http://www.nxtbook.com/nxtbooks/naylor/NRWQ0312 http://www.nxtbook.com/nxtbooks/naylor/NRWQ0212 http://www.nxtbook.com/nxtbooks/naylor/NRWQ0112 http://www.nxtbook.com/nxtbooks/naylor/NRWQ0411 http://www.nxtbook.com/nxtbooks/naylor/NRWQ0311 http://www.nxtbook.com/nxtbooks/naylor/NRWQ0211 http://www.nxtbook.com/nxtbooks/naylor/NRWQ0111 http://www.nxtbook.com/nxtbooks/naylor/NRWQ0410 http://www.nxtbook.com/nxtbooks/naylor/NRWQ0310 http://www.nxtbook.com/nxtbooks/naylor/NRWQ0210 http://www.nxtbook.com/nxtbooks/naylor/NRWQ0110 http://www.nxtbook.com/nxtbooks/naylor/NRWQ0409 http://www.nxtbook.com/nxtbooks/naylor/NRWQ0309 http://www.nxtbook.com/nxtbooks/naylor/NRWQ0209 http://www.nxtbook.com/nxtbooks/naylor/NRWQ0109 http://www.nxtbook.com/nxtbooks/naylor/NRWQ0408 http://www.nxtbook.com/nxtbooks/naylor/NRWQ0308 http://www.nxtbook.com/nxtbooks/naylor/NRWQ0208 http://www.nxtbook.com/nxtbooks/naylor/NRWQ0108 http://www.nxtbookMEDIA.com
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